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Obama back in US after trip to Mexico, Costa Rica

The Associated Press

Posted:
05/04/2013 04:58:14 PM MDT

Updated:
05/04/2013 05:27:43 PM MDT

Click photo to enlarge

President Barack Obama walks down the stairs from Air Force One upon arrival at Andrews Air Force Base, in Md. Saturday, May 4, 2013. Obama is returning from his trip to Mexico and Central America. ( AP Photo/Jose Luis Magana)

One-day event to run slide down University HillIt's not quite the alternative mode of transportation that Boulder's used to, but, for one day this summer, residents will be able to traverse several city blocks atop inflatable tubes.